Valve



No. 624,790'. Patented May 9, |899.

F. w. GORDON.

VALVE.

(Application flled June 21, 1897. Renewed Feb. 23, 1899.) (No Model.)

v unIllllllllllllnl"IlIll? s s is;

Witnesses me mams Crans coA vamo-Limo.. wAsmNGTnu. u. c4

No. 624,799. F GORDON Patented May 9, |899.

VALVE.

(Application filed June 21, 1897. Renewed Feb. 23, 1899.) No model.) f 2` sham-sheet 2.

1 I l' Elf` li. l r l.

il' u; Z l' l I: i I

Il i I Il `M| I I I I 'iiiii l' Z0 2L y l zo n 3 .Z3 v

mi; 5 (19 5 16 y 15 u zo Z0: y f

tsses: L /91 I'Ir'lventoir (n1 w. Sw S. B n Attoney me NaRRls PETERS co. PHom-Llmo.. wAsnmGmNA o. c.

VNTTED STATES PATENT OFFICE,

FREDERICK W. `4GORDON, OF PHILADELPHIA, PENNSYLVANIA. i

VALVE.

SPECIFICATION forming part Of .Letters Patent N0. 624,790, dated May 9, 1899. Application led June 21, 1897. Renewed February 23. 1899. Serial No. 706,552. (No model.)

T @ZZ whom it may concern:

Be it known that I, FREDERICK W. GORDON, of Philadelphia, Philadelphia county, Pennsylvania, have invented certain new and useful Improvements in Valves, of which the following is a specification.

This invention relates to valves for use in connection with engines, pumps, compressors, dac., and the improvements will be readily understood from the following description, taken in connection with the accompanying drawings, which description and drawings are directed to a merely exemplifying embodiment of my improved valves in a steam-engine where the valves are used for the admission and exhaust of steam.

In the drawings, Figure l is a side elevation of one end of a steam-engine cylinder equipped with my improved valves; Fig. 2, a vertical longitudinal section of the same in the plane of line a of Figs. 5, 6, and 7; Fig.

3, a similar section in the same 4plane of one In the drawings, 1 indicates an end of the cylinder of a steam-engine; 2, the cylinderhead thereof.; 3, a -chamber formed in the cylinder-head and forming a steam-chest, the

drawings showing this chamber as comprehending one half of the area of the cylinderhead; 4,' a similar chamber comprehending the other half of the area of the cylinderhead and forming the exhaust-chamber; 5, connections to these chambers for the receptionof suitable piping; 6, a valve-cylinder extending entirely across chamber 3, its axis being parallel with the axis of engine-cylinder 1, theinner end of cylinder 6 being open to the engine-cylinder, while its outer end is closed by a bonnet; 7, a circumferential series of ports in cylinder 6, placing the interior vof cylinder 6 in communication with chamber 3, the inner edge of port 7 being as close as practicable Ato the inner face of cylinder-head 2; 8, a valve-piston fitting within cylinder 6 and adapted for reciprocation therein, so as to cover and uncover ports 7,

Fig. 2 showing this valve-piston as being line and line with the portsthat is to say, j ust covering the ports-the drawings showing valvepiston 8 as being provided with a'packingring, which ring is of preferable employment; 9, a second valve-cylinder similar to cylinder 6 and disposed below cylinder 6; 10, a circumferential series of ports in cylinder 9; 1I, a hollow valve-piston working within cylinder 9, and 12 a circumferential series of ports through the. peripheral wall of piston l1 and always in communication with ports I0 in cylinder 9, Fig. 2 showing cylinder 9 as beingprovided withv a packing-ring engaging piston Il, the inner ends of ports 12 appearing in the drawings as being line and line with the forward end of cylinder 9--that is tosay, if piston 11 moves to the right ports l2 will begin to open. their acconipaniments, are thus provided in chamber 3, these two cylinders, with their pistons, constituting a coperatingpair, their pistons being coupled together. They are the steam-valves for the end of the cylinder under consideration. The other chamber 4;

in the cylinder-head contains a similar pair Two cylinders 6 and 9, with steam-valves and one for the pair of eXhaustvalves, the rock-shafts being in a horizontal plane midway between the axes ofthe upper and lower valves of the pairs, the inner ends of the rock-shafts being somewhat outside the Vertical planes of the axes of their appropriate valves; 16, a double-ended arm fast on the inner end of each rock-shaft just to the outside of cross-heads 14; I7, blocks engaging vertical slots in,A cross-heads 14. and mounted on inwardly-projecting pins on arms 16, so that the rocking of al given arm 16 will move one valve-piston of the appropriateipa in one direction, `while it movesthe oth lvalve-piston of that pair in. an opposite direction; 18, cross-head guides projecting outwardly from the bonnets of the valve-cylinders and engaged by cross-heads 14; 19, an arm fast on the outer end of each of the rockshafts 15; 20, rods leading from wrist-pins in arms 19 andl adapted to be connected with such valve moving device as may be employed, be it eccentric or wrist plate or what not, and 21 the bonnets secured to the outer wall of the chambers in cylinder-head 2, these bonnets serving to retain the removable valve-cylinders in place in the chambers and to close the outer ends of the valve-cylinders and to support the cross-head guides 18.

The valve-cylinders are suitably bored and concentrically turned and fittedremovably,

. but tightly, into suitably-bored seats in the inner and outer walls of the chambers in the cylinder-head, the seats in the inner wall of thefcylinder-head being ra'bbeted, as shown, and the bonnets holding the valve-cylinders in position.

Giving attention to Fig. 2, showing the steam-valves,let it be noticedthat both valves are line and line. Any motion of piston 8 to theleft is an opening motion and any motion of piston-11 to the right is an opening motion. Hence if the arm 16 which operates these two pistonshas-its upper end moved to the left piston 8 will open ports 7 by retreating from the engine-cylinder, While piston 11 Will open by moving into the engine-cylinder, and the ports having been thus opened the closure would be eected by piston 8 moving again toward the engine-cylinder while piston 11 retreats fromy the engine-cylinder. It is to v be'observed that if pistons 8' and 11 are of` the same diameter they will be perfectly balanced as regards pressure in the steam-chest, pressure in the engine-cylinder, and current through the ports, the valves thus moving with extreme ease. Motion is to be given to arms 16 by any properly-selected valve-moving device.

In Fig. 2 it will be observed that witlr the valves in line-and-line position the inner ends of the pistons are substantially even with the inner surface of cylinder -head 2. Consequently the-surface exposed to the steam within the engine-cylinder is practically that due to a plain cylinder-head unmodified by any valve conditions, there being no exposure of this steam to surfaces chargeable to ports or passages. Infcalculations for the finer economies of steam as effected by heatexchanges due to surfaces exposed to the steam within the engine-cylinder it is found that the present construction provides the most favorable conditions practically or theoretically obtainable, and laside from the question of exchanges of temperature as effected by the areas of metalli-c surfaces exposed to the steam within the cylinder it is to be noticed that the volume of clearance is reduced' almost to zero. The engine-piston may approach cylinder-head 2 as close as is permissible with safety, the small clearance thus resulting being practically all that is involved in the structure, the valve system adding practically nothing to such clearance, the result being the effecting of marked economies due to the small clearance, which economies may be availed of either in steam-engines or in compressors dealing with iiuids.

I claim as my invention 1. The combination, substantially as set forth, of a main cylinder, a cylinder-head thereto, a pair of portedy valve-cylinders disposed in said cylinder-head parallel with the main cylinder and having their inner ends -opening directly into said main cylinder, a

valve-piston in and entirely closing the inner end of each of saidvalve-cylinders, one of p said valve-pistons being arranged to perform its opening office by moving towardJ and partially into said main cylinder, and mechanism for reciprocating saidvalve-pistons inthe valve-cylinders.

2. The combination, substantiallyY as set forth, of a main cylinder, a cylinder-head thereto,-a pair of valve-cylinders disposed in said cylinder-head parallel withv the main cylinder and having their inner ends opening directly into said main cylinder, a valve-piston in and entirely closing the inner end o-f each of said valve-cylinders, one of sai'dvalve-pistonsbeing arranged to perform its opening office by moving toward and lpartially into said main cylinder while thel other valve-piston performs its opening oii'ce by moving IOO away from the main cylinder, and mechanism for connecting and reciprocating said valvepistons in said valve-cylinders.

3.. The combi-nation, substantially as set forth, of a main cyl-inder, a cylinder-head thereto, a pairof Valve-cylinders disposed i-n said cylinder-head parallel with the main cylinder and having their inner ends 'opening` directly into said main' cylinder, a valve-piston in each of said valve-cylinders, one of said valve-pistons being arranged to perform its opening office by moving toward and partially into said main cylinder while the other Valve-piston performs its opening office' by moving away from the main cylinder, a rock- IIO shaft, arms thereon, and valve-stems froml said arms to said valve-pistons. 1i. The combination, substantially ask set forth, of a main cylinder, acylinder-head thereto, two pairs of valve-cylinders in said cylinder-head parallel with the mainy cylinder and opening directly into the main cylinder, a duid-chamber foreach pair of valve-cylinders, a valve-piston in each valve-cylinder, one piston of each pair performing its opening office by moving partially into the main cylinder while the other pistons open by moving in the opposite direction, a-nd independent mechanism for movingeach pair of pistons ink theircylinders.

5. The combination, substantially as set forth, of a mai-n cylinder, a cylinder-head thereto, a Valve-cylinder in the cylinder-head parallel to the main cylinder and opening di rectly thereinto, a bonnet closing the outer end of the Valve-cylinder, a stuffing-box at the center of the bonnet, cross-head guides carried by the bonnet and projecting outwardly therefrom, a valve projecting through said stuffing-box, a cross-head on said stern and engaging said guides, and valve-moving mechanism engaging said cross-head.

G. The combination, substantially as set forth, of a main cylinder, a double-Walled cylinder-head thereto, a valve-cylinder removably seated in the two Walls of said cylinder-head parallel to the main cylinder and opening directly thereinto, a bonnet closing the out'er end of the valve-cylinder and re-l taining it in its seats in said cylinder-head Walls, cross-head guides carried by the bonnet, a valve-piston in the Valvecylindcr, a

valve-stem therefor with a cross-head engag-4 ing said guides, and valve-moving mechanism engaging said cross-head.

7. The combination, substantially asset forth, of a main cylinder, a double-Walled cylinder-head thereto formed with chambers, Valve-cylinders in said cylinder-head across said chambers" and separately seating in the Walls thereof and having their inner ends opening directly into said main cylinder, bonnets secured to the outer Wall of the cylinderhead and closing said valve-cylinders, valve# pistons in the Valve-cylinders, and IneclhanL ism for reciprocating the valve -pistons in their cylinders.

FREDERICK W. GORDON.

Witnesses BENJ. BEISEL, HARRY- GREEN. 

